[Multi scene editing] Multiple duplicating scenes are opened on next time Play, if you select scene in playmode

If you doubleclick on the scene (from Assets) while it's running in Playmode, on next Play it's opened in Hierarcy twice.
If you open 2 different scene they also are opened in Hierarchy, but both contain objects from last opened.

How we can reproduce it using the example you attached

0. Create and save Scene1 and Scene2 with different inner objects (like Cube in Scene1 and Sphere in Scene2).
1. Open Scene1. Press Play.
2. Double click on Scene1 in Project tab. (Playmode is stopped.)
3. Press Play.
4. Scene is duplicating in Playmode.
5. Double click on Scene2 in Project tab. (Playmode is stopped, Scene2 is opened.)
6. Press Play.

Actual result: Scene2 is opened in Playmode (with corrupted Lightning sometimes). Also Note, that Scene1's contain dublicating objects from Scene2, not from Scene1.
In 5.3.2f1 (e87ab445ead0) there also was expected DontDestroyOnLoad scene.
In 5.4.0b5 (60658ab74c44) there is no DontDestroyOnLoad scene.

Logs:
m_ManagersToReset.empty()
There are 2 audio listeners in the scene. Please ensure there is always exactly one audio listener in the scene.

Expected result: If we select some scene in Playmode, it should be opened and played alone. If it's Multiscene editing feature scenes should contain theirs objects, not the last opened.